Improvement in apparatus for detaching hose from couplings



. -E;B.PRE"STN. j .y Apparatus for Dietaohing, Hose from Coupling.v

No. 205,902. Patented luly 9,1878.

FIGLR.

WITNESSES:

N,FETERS. FH01'0-LITMJGRAFMER` WASHINGTON, n C.

l I l i l UNITED STATES PATENT FFICE.

EVERETT B. PRESTON, OI CHICAGO, ILLINOIS.

IMPROVEMENT IN APPARATUS FOR DETACHING HOSE FROM COUPLINGS.

Specification forming part of Letters Patent N0. 205,902, dated July .l,ISTR; application filed April 18, 1378.

To all whom it may concern:

Be it known that 1, EVERETT B. PRESTON, of Chicago, in the county ofCook and State of Illinois, haveinvented certain Improvements inApparatus for Detaching Hose from Couplings, of which the following is aspecification:

Hose are quite commonly secured to their couplings by a swaged internalring of metal, placed within the hose and forcibly expanded, so as tocompress the hose between the exterior of the ring and the interior ofthe chambered coupling. This has been deemed one of the best methods ofsecuring the hose to the coupling, and several devices have beeninvented for swaging the ring in place. There has, however, existed thisserious objection, that it is exceedingly dittieult to separate the hosefrom the coupling when desired, resort usually being had to thelaborious and difficult operation of cutting the ring with a coldchiselor burning the hose out. This objectionable feature has been felt to bea serious drawback.

Among the devices for swaging the ring in place is one invented by YV.A. Caswell, and patented January 22, 1878, to said Caswell and myself,being Patent N o. 199,350, and which consists, essentially, in asegmental expanding piece, to be placed Within the ring, and expanded bya sliding cone forced into the expanding piece by a screw. This is theapparatus which I have been using for inserting the rings; and myinvention consists in applying to this or a similar expander a cuttingedge or edges on exterior of the expanding piece, so that when insertedwithin the swaged ring and forcibly expanded the ring will be cut in twoby the cutting edge or ed ges, as will be more fully explained.

In the accompanying drawing, which forms a part of this specication,Figure 1 represents a side view of Gaswells apparatus with my expandingcutter applied. Fig. 2 is a vertical longitudinal section of the same,shown within a hose-coupling as inthe act of cutting the ring. Fig. 3 isan end view, looking at the smaller end of the segmental expandingcntter. Fig. 4 is a vertical section of the same.

Like letters of reference indicate like parts wherever used in theseveral gures.

In the said drawing, A represents the hose; B, the coupling; C, theinternal swaged ring; I), the expanding cutter or segmental piece; d,the knives thereof, and E the conical plug Within the expanding piece,the motion of which produces the expansion ofthe segmental piece D.

It will be noticed that two of the segments are furnished with cuttingribs or edges (I, and that these segments are arranged opposite to eachother. This is in order to afford a more direct bearing in the operationof cutting than would be obtained if only a single knife were used.

111 operation, the hose is slipped upon the apparatus, as shown at Fig.2, and, by means of the screw turned by a winch or key, the cone isdriven forward, expanding the cutters and forcing the knives into themetal of the ring, severing the ring usually at one point only insteadof at two, as might be expected, because one knife will usually serve asa bearing and the other as a cutter. When the eutting is complete theapparatus is withdrawn, and the severed ring may be readily sprungtogether and removed, permitting the withdrawal of the hose.

The cutting may be done with a single knife, but not so well as withtwo. More than two knives may be used, if desired; but I have not foundany advantage from employing a greater number.

I claim- The expanding piece provided with a cutting edge or edges lyingin the direction of the axis.

EVERETT B. PRESTON. Witnesses:

J oHN W. MUNDAY, EDw. S. EvAnTs.

